Dew is the discharge from the vagina after a woman has finished giving birth, and is a normal physiological phenomenon. After delivery, a small amount of meconium tissue remains in the uterine cavity and the uterus will still bleed for a short period of time. This blood, mixed with the meconium tissue, is discharged through the vagina and is a defense mechanism of the female reproductive system after delivery. Currently, there are three clinical categories of menstrual discharge: bloody, plasma, and white menstrual discharge. These three types of discharge are all normal physiological changes. Each has a normal time of appearance and duration. Under normal circumstances, the bloody diarrhea occurs after the completion of labor and usually lasts for about three days. Plasma leaks appear after the bloody leaks have finished. The white leaks come last and last the longest, about three weeks. By observing the duration and nature of the discharge, you can determine whether there are any abnormalities in the pregnancy. If the bloody discharge lasts for a longer period of time, then you need to be alert to the occurrence of postpartum uterine bleeding. To summarize, the discharge is the vaginal discharge of the pregnant woman after delivery, and it is very necessary to observe the duration and character of the discharge after delivery.